from __future__ import annotations

from dataclasses import dataclass


@dataclass
class RopeSpec:
    diameter_mm: int
    breaking_kN: float
    unit_weight_N_per_m: float


default_ropes = [
    RopeSpec(26, 410, 26 * 0.0036),
    RopeSpec(28, 470, 28 * 0.0036),
    RopeSpec(32, 600, 32 * 0.0036),
]


